Senergy SE 5K Series User manual

5K /6K/ 8K/10K/
12K/15K
User Manual
(Ver. 00)
Shenzhen Senergy Technology Co., Ltd.
1

Contents
Forward .............................................................................................................................................
4
1 Safety Precautions ..........................................................................................................................
6
1.1
Personnel Safety ......................................................................................................................
6
1.2 The PV Inverter Protection .....................................................................................................
6
1.3
Installation Safety ...................................................................................................................
7
1.4
Electrical Connections ............................................................................................................
7
1.5
Operating and Commissioning ................................................................................................
8
1.6
Maintenance ............................................................................................................................
8
1.7 Additional Information............................................................................................................
9
2 Overview of the Inverter ................................................................................................................
9
2.1
Functional Models ...................................................................................................................
9
2.1.1
Function ...........................................................................................................................
9
2.1.2
Model Description ..........................................................................................................
10
2.2
Network Application.............................................................................................................
10
2.2.1
Grid-tied PV Power Systems ..........................................................................................
10
2.2.2
Supported Power grids............................................................................................
10
2.3
Outline and Dimensions........................................................................................................
11
2.3.1
Dimensions .....................................................................................................................
11
2.3.2
Outline ............................................................................................................................
11
2.4 Working Process....................................................................................................................
13
2.4.1
Basic Principle Description ............................................................................................
13
2.4.2
Circuit Diagrams ............................................................................................................
13
2.4.3 Working Modes..............................................................................................................
14
3 Storage .........................................................................................................................................
15
4 Installation ....................................................................................................................................
16
4.1
Checking the Outer Packing .................................................................................................
16
4.2
Moving the inverter...............................................................................................................
17
4.3
Identify the Inverter ..............................................................................................................
18
4.3.1
Nameplate ......................................................................................................................
18
4.3.2
Compliance and Safety Symbols ....................................................................................
18
2

4.4
Installation Requirements .....................................................................................................
19
4.4.1
Determining the Installation Position.............................................................................
19
4.4.2
Installation Mode Requirements ....................................................................................
23
4.5
Wall-mounting the Inverter ...................................................................................................
24
5 Electrical Connections .................................................................................................................
26
5.1
Connecting Protection Ground (PGND) Cables ...................................................................
27
5.1.1
Preparation .....................................................................................................................
27
5.1.2 Wiring Procedures..........................................................................................................
28
5.2
Connecting AC Power Cables...............................................................................................
29
5.2.1
Preparation .....................................................................................................................
29
5.2.2
Procedure of Connecting AC Cables..............................................................................
31
5.3
Connecting the PV Strings....................................................................................................
33
5.3.1
Preparation .....................................................................................................................
34
5.3.2
Connecting DC Power Cables........................................................................................
36
5.4
Connecting Communications Cables....................................................................................
39
5.4.1
5K/6K/8K/10K/12K/15K Communications Mode Description.....................................
39
5.4.2
Connecting RS485 Communications Cables .................................................................
41
5.4.3
Setting RS485 Communications Address ......................................................................
44
6 Installation Verification ................................................................................................................
45
7 System Operation .........................................................................................................................
46
7.1
Powering ON the Inverter.....................................................................................................
46
7.2
Powering OFF the Inverter ...................................................................................................
46
8 User Interface ...............................................................................................................................
47
8.1
Querying inverter operation status........................................................................................
47
8.2
Downloading and setting SE Touch APP ..............................................................................
48
8.3
Setting Standard Parameters.............................................................................
48
9 Maintenance .................................................................................................................................
50
9.1
Routine Maintenance ............................................................................................................
50
9.2
The Inverter Troubleshooting ................................................................................................
51
9.3
Removing the Inverter ..........................................................................................................
54
10 Quality Guarantee ......................................................................................................................
55
10.1 Quality Terms......................................................................................................................
55
10.2 Liability Waiver ..................................................................................................................
55
11 Disposal of the Inverter ..............................................................................................................
56
12 Technical Specifications .............................................................................................................
57
3

Forward
Dear User,
Thank you so much for choosing 5K/6K/8K/10K/12K/15KTL, the latest generation of
grid-tied PV Strings inverter (hereinafter referred to as the inverter) designed and
developed by Senergy. This user manual describes the inverter in terms of its
installation, electrical connections, operation, commissioning, maintenance, and
troubleshooting. Please read through the manual carefully before any operation, and
keep the manual well for future reference.
Application Model
Grid-tied PV string inverter
5K/6K/8K/10K
12K/15K
Intended Audience
This user manual is intended for photovoltaic (PV) inverter operating personnel and
qualified electrical technicians.
Notes:
This user manual is subject to change (specific please in kind prevail) without prior
notice. The latest version of user manual and other more information about the
product are available from http://www.Senergytec.com, and/or by call our service
center 400-930-3930.
4

This inverter must be installed by the '' Australia local agent professional person who
authorized by manufacturer''.
This professional person should familiar with Australia relevant electrical regulations
to ensure all installation comply with Electrome chanical regulations.
Symbol Conventions
Safety symbols used in this manual, which highlight potential risks and important
safety information, are listed as follows:
Symbol
Description
Indicates an imminently hazardous situation which, if not correctly
DANGER
followed, will result in serious injury or death.
Indicates a potentially hazardous situation which,
if
not
correctly
WARNING
followed, could result in serious injury or death.
Indicates a potentially hazardous situation which,
if
not
correctly
CAUTION
followed, could result in moderate or minor injury.
Indicates a potentially hazardous situation which,
if
not
correctly
NOTICE
followed, could result in equipment failure to run, or property damage.
Calls attention to important information, best practices and tips:
Note
supplement additional safety instructions for your better use of the PV
inverter to reduce the waste of your resource.
Refer to documentation (Remind operators to refer to the
documentation shipped with the inverter).
5

1 Safety Precautions
Please read these safety precautions in User Manual carefully to prevent personal
injury or death.
1.1 Personnel Safety
a. The PV inverter must be installed, electronically connected, operated and
maintained through qualified/ trained technician;
b. The qualified technician must be familiar with the safety regulations of electrical
system, working process of PV power generation system, and standards of local
power grid;
c. The technician must read through User Manual carefully and master it before any
installation and operation.
1.2 The PV Inverter Protection
NOTICE
As soon as receiving the inverter, please check if it is damaged during its
transportation. If yes, please contact Senergy or your dealer immediately.
a. Do not tamper with any warning signs on the inverter enclosure because these signs
contain important information about safe operation.
b. Do not remove or damage the nameplate on the inverter’s enclosure because it
contains important product information.
c. Do not remove the anti-dismantle label on the inverter’s enclosure because it is the
basis for product warranty.
6

1.3 Installation Safety
Please read through User Manual carefully before installing the inverter;
warranty or liability will be void from Senergy if damage is caused by
NOTICE
installation faults.
a. Ensure there is no electronical connections around ports of the PV inverter before
installing;
b. Adequate ventilation must be provided for inverter installation location. Mount the
inverter in vertical direction, and ensure that no object is put on the heat sink affecting
the cooling. (For details, refer to Chapter 4 Installation)
1.4 Electrical Connections
DANGER
Before installing the inverter, check all electrical ports to ensure no damage
and no short circuit. Otherwise personal casualty and/or fire will occur.
a. Input terminals of the inverter apply only to input terminals of PV String; do not
connect any other DC source to the input terminals.
b. Before connecting PV modules, ensure that its voltage is within the safe range;
when exposed to any sunlight, PV modules can generate high voltage.
c. All electrical connections must meet the electrical standards of the country or
region.
d. Cables used in electrical connections must be well fixed, good insulation, and with
proper specification.
7

1.5 Operating and Commissioning
While the inverter operating, high voltage can lead to an electrical shock
hazard, and even cause personal casualties. Therefore, operate the PV inverter
DANGER strictly according to the safety precautions in user manual.
a. Before getting the permission of electrical power sector in the country/ region, the
grid-tied PV inverter cannot start generating power.
b. Follow the commissioning procedures described in user manual when
commissioning the inverter.
c. Do not touch any other parts’ surface except the DC switch when the PV inverter is
operating; its partial parts will be extremely hot and can cause burns.
1.6 Maintenance
Power OFF all electrical terminals before the inverter maintenance;
DANGER strictly comply with the safety precautions in this document when
operating the inverter.
a. For personal safety, maintenance personnel must wear appropriate personal
protective equipment (like insulation gloves and protective shoes) for the inverter
maintenance.
b. Place temporary warning signs or erect fences to prevent unauthorized access to the
maintenance site.
c. Follow the procedures of maintenance stipulated in the manual strictly.
d. Check the relevant safety and performance of the inverter; rectify any faults that
may compromise the inverter security performance before restarting the inverter.
8

1.7 Additional Information
NOTICE
To avoid any other unforeseeable risk, contact Senergy immediately, if
there is any issue found during operation.
2 Overview of the Inverter
This chapter introduces the inverter and describes its functional model, network
application, appearance, dimensions, and working process etc.
2.1 Functional Models
2.1.1 Function
This series (5K/6K/8K/10K/12K/15KTL) is a three-phase grid-tied PV string inverter
(transformer less) that converts the DC power generated by PV strings into AC power
and feeds the power into the power grid.
The inverter is transformerless. Add an isolation transformer before
grounding the positive/ negative terminal of PV modules (like Thin Film
WARNING
module) for operation.
Do not connect PV modules in parallel to several PV inverters for
operation.
WARNING
9

2.1.2 Model Description
Figure 2.1 shows a model number of the inverter, using SE 15KTL as an example.
Figure 2.1 Model number descriptions
2.2 Network Application
2.2.1 Grid-tied PV Power Systems
This series inverter applies to grid-tied PV power systems for industrial/commercial
rooftops, fishing/farmers light complementary power generation systems, and large
ground-based power stations. Generally, these series inverters are used to low-voltage
grid-tied PV power system, as shown in Figure 2.2.
Figure 2.2 a low-voltage grid-tied PV power system
2.2.2 Supported Power grids
These series inverters support TN-S, TN-C, and TT power grids as shown in Figure
2.3.
10

Figure 2.3 Power grids supported by the inverter
2.3 Outline and Dimensions
2.3.1 Dimensions
Figure 2.4 shows the dimensions of the inverter as follows:
Figure 2.4 The dimensions of the inverter by front & lateral views (unit: mm)
2.3.2 Outline
Figures 2.5 shows the outline of inverter as follows:
11

Figure 2.5 The front view and amplification effect of LED indicator area
Figure 2.6 The rear view of the inverter
12

Figure 2.6 The bottom view of the inverter
2.4 Working Process
2.4.1 Basic Principle Description
5K/6K/8K/10K/12K/15KTL receive inputs from PV strings through DC switch and
surge protection in order: there are 2 groups of PV strings input terminals on DC input
terminal of 5K/6K/8K/10K; there are 3 groups of PV strings input terminals on
12K/15KTL with the 2nd and 3rd routes terminals merging into one independent
MPPT. Then the inputs are grouped into two MPPT routes inside the inverter to track
the maximum power point of the PV strings. These two MPPT power is then
converted into DC Bus which is then converted to AC power through an inverter
circuit. Finally the converted AC power is fed to the Power grid through the inverter.
Surge protection and EMI filer are supported on both the DC and AC sides to reduce
electromagnetic interference.
2.4.2 Circuit Diagrams
Figure 2.7 shows the circuit diagram for 5K/6K/8K/10K.
13

Figure 2.7 The circuit diagram of 5K/6K/8K/10K.
Figure 2.8 shows the circuit diagram for 12K/15KTL.
Figure 2.8 The circuit diagram of 12K/15KTL.
2.4.3 Working Modes
Three working modes of the inverter are shown as follows: standby, operating, and
shutdown. Table 2.1 shows the conditions for the inverter to switch between working
modes.
Table 2.1 Working modes description
Modes
Description
Standby
The PV inverter enters the standby mode when the input voltage of PV Strings
can enable auxiliary power supply to run, but cannot meet the inverter operation
requirements.
Operating
When the PV inverter is grid-tied and generates electricity, it
> tracks the maximum power point to maximize the PV String output.
> converts DC power from PV strings into AC power and feeds the power to the
power grid.
14

Shutdown The PV inverter switches from standby or operating mode to shutdown mode if
detecting a fault or a shutdown command.
The shutdown mode can only be cleared when rebooting DC side or receiving a
booting command.
3 Storage
This chapter describes the storage requirements for the inverter.
The following storage instructions apply if the PV inverter will not be deployed
immediately:
>Do not unpack the inverter (put desiccant in the original box if the PV inverter is
unpacked).
>Store the PV inverter at a temperature range of -40°C to +70°C and with the relative
humidity of 0% to 100% (no condensing).
>The PV inverter should be stored in a clean and dry place and be protected from dust
and water vapor corrosion.
>A maximum of four layers of inverters can be stacked.
>Do not position the inverter at a front tilt, excessive back tilt, or side tilt, or upside
down.
>Conduct periodic inspection during storage. Replace the packing materials
immediately if any rodent bites are found.
>Ensure that qualified personnel inspect and test the inverter before use if it has been
stored for a long time.
15

4 Installation
Do not install the inverter on flammable building materials or in an
DANGER area that stores flammable or explosive materials.
Do not install the inverter in a place where personnel are likely to
CAUTION
come into contact with its enclosure and heat sinks to avoid
electrical shock/ burn.
4.1 Checking the Outer Packing
a. When receiving the inverter, check that the packing materials are intact.
b. After unpacking, check that the deliverables are complete, intact, and consistent
with your order list.
c. Examine the PV inverter and its fittings for damage such as scraps and cracks.
Figure 4.1 The deliverables of 12K/15KTL, as an example
16

Note: The deliverable quantity of 5K/ 6K/8K/10KTL for item 9 & 10 in Figure 4.1 is
both 2 * 2.
If any damage mentioned above is found, contact the dealer immediately.
NOTICE
4.2 Moving the inverter
After checking the outer packing, move the PV inverter to the designated installation
position horizontally. Hold the handles on both sides of the inverter, as shown in
Figure 4.2.
CAUTION
Figure 4.2 Moving the inverter
The inverter is relatively heavy! To prevent device damage and personal
injury, arrange two people to move the inverter and handle with care.
>Do not place the inverter with its wiring terminals contacting the floor
because the power ports and signal ports at the bottom of the device are not
CAUTION
designed to support the weight of the inverter.
>When placing the inverter on the floor horizontally, put foam or paper
under to protect its enclosure.
17

4.3 Identify the Inverter
4.3.1 Nameplate
After moving the PV inverter from packing box, identify it by reading its nameplate
labeled on the side. The nameplate contains important product information: the model
information, communications/ technical specifications, and compliance.
4.3.2 Compliance and Safety Symbols
Safety symbol
Description
Electrical shock!
There are residual voltages in the PV inverter. It needs 10 minutes to
finish discharge.
The PV inverter must not be touched when in operation. Its
enclosure and heat sinks are extremely hot.
Electrical shock! This part is charged. Only qualified and/or trained
electrical technicians are allowed to perform operations on the
inverter.
If the inverter service life has expired, dispose it in accordance with
local rules for disposal of electrical equipment waste. Do not dispose
the PV inverter with household garbage.
The PV inverter is compliant with CQC.
18

4.4 Installation Requirements
According to installation position, one kind of physical installation is described below
in detail: wall-mounting.
4.4.1 Determining the Installation Position
Basic Requirements
a. The inverter is protected to IP65 and can be installed indoors or outdoors.
b. The installation method and position must be appropriate for the weight and
dimensions of the inverter. The weight of 5K/6K/8K/10K is 19.8kg, 12K/15K
is 21.8kg, and yet size of 5K/6K/8K/10K/12K/15KTL is
385mm*490mm*185mm.
c. Do not install the inverter in a place where personnel are likely to come into
contact with its enclosure and heat sinks because these parts are extremely hot
during operation.
d. Do not install the inverter in an area that stores flammable or explosive
materials.
Installation Environment Requirements
a. The ambient temperature must be below 50°C which ensures the inverter’s
optimal operation and extends its service life.
b. The inverter must be installed in a well ventilated environment to ensure good
heat dissipation.
c. The inverter must be free from direct exposure to sunlight, rain, and snow to
extend its service life. It is recommended that the inverter be installed in a
sheltered place. If no shelter is available, build an awning, as shown in Figure
4.3.
19

Figure 4.3 Installation environment with awning (unit: mm)
Carrier Requirements
a. The carrier where the inverter is installed must be fire-proof. Do not install the
inverter on flammable building materials.
b. The wall must be solid enough to bear the weight of the inverter.
c. Do not install the inverter on a wall made of gypsum boards or similar materials
with weak sound insulation to avoid noise disturbance in a residential area.
Installation Space Requirements
a. It is recommended that the inverter be installed at eye level to facilitate operation
and maintenance.
b. Reserve enough clearance around the inverter to ensure sufficient space for
installation and heat dissipation, as shown in Figure 4.4.
20